Sender vs MailerLite

A free email plan is useful only while your actual mailing pattern fits it. For a small newsletter, Sender gives considerably more room before payment than MailerLite. That does not settle the longer-term purchase: sending frequency, paid-plan boundaries and the way each service counts people can change the answer.

Start with Sender if staying within a 2,500-subscriber free allowance is the immediate problem. Evaluate MailerLite alongside it if your business needs a documented paid tier for more frequent newsletters, forms and welcome automations. Neither price nor this comparison establishes better inbox placement. BenPicks has not run a deliverability test of this pair.

What the free plans actually cover

Sender's 14-day Pro trial should not be mistaken for permanent free-plan eligibility. MailerLite's free-plan FAQ (observed 18 October 2026) explains that exceeding 250 active subscribers pauses campaigns, automations and imports until the audience is reduced or the plan is upgraded. Exceeding the free send allowance is a different limit, with a monthly reset. Do not plan a campaign around the assumption that free sending continues indefinitely after either boundary.

A newsletter that grows from 500 to 2,500 people

Consider a hypothetical newsletter with 500 subscribed readers. Four full-list campaigns require 2,000 sends. Fifty of those readers are new and receive three welcome emails during the month, adding 150. Total: 2,150 recipient-sends. The welcome group is already included in the 500; it is not an extra audience.

That workload fits Sender's published free subscriber and send ceilings. It exceeds MailerLite's 250-subscriber ceiling even though 2,150 sends fall below its 2,500-send ceiling. Looking only at the monthly email allowance would give the wrong answer.

At 2,500 readers, with 250 included newcomers, the same pattern becomes 10,750 sends. Sender's free ceilings still accommodate those numerical inputs. Six full-list campaigns instead of four raise the total to 15,750, exceeding the 15,000-send ceiling by 750. This is where the buying question changes from subscriber capacity to campaign frequency. Feature eligibility and service rules must also fit before choosing a plan.

What happens after the free tier?

We selected 2,500 subscribers, USD and monthly billing on both official pricing pages on 21 October 2026. The prices below are monthly charges, not annual equivalents or introductory annual discounts. Sender's pricing FAQ ↗ states that VAT is excluded under “Why is the VAT not included in the price?”; MailerLite says applicable taxes may be added. Feature requirements still need their own check.

“Fits” refers only to the subscriber and send allowances in this selected offer. It does not establish equivalent automation, support, transactional sending or inbox placement. Do not treat an unlimited label as exemption from acceptable-use rules.

The three hypothetical workloads use the same 2,500 readers, including 250 newcomers who each receive three welcome emails. Four, six and twelve full-list campaigns produce 2,500 × 4 + 250 × 3 = 10,750, 2,500 × 6 + 250 × 3 = 15,750, and 2,500 × 12 + 250 × 3 = 30,750 recipient-sends. Newcomers are not added to the stored audience a second time.

For four campaigns, Sender's free plan already covers these numerical limits if its features and branding fit. At six campaigns, the free plan is 750 sends short; Standard's selected $27 offer covers the volume. At twelve, the relevant selected Sender offer becomes Professional at $44, compared with MailerLite Power at $49. That $5 monthly price difference applies to these two covering offers at this audience and workload, before taxes and any extras; it is not a general saving or a claim that the products are interchangeable.

What to check beyond the send allowance

Sender Standard's selected card lists three role-based seats and removal of Sender branding. Professional lists ten role-based seats and advanced automation. MailerLite Comfort's selected card lists three seats and 50 automations; Power lists unlimited seats and automations. Compare the actual welcome journey, required triggers and permission model before deciding whether a volume-fitting plan also covers the work.

For example, a team that needs a particular advanced automation may need Professional even when Standard has spare emails. A newsletter operator who needs a paid platform but only one simple welcome sequence may make a different choice. These are buyer checks based on documented plan boundaries, not usability tests BenPicks has performed.

Our earlier 500-subscriber paid observations remain historical: Sender's 17 October capture showed Standard $9/6,000 emails and Professional $15/12,000; MailerLite's 18 October capture showed Comfort $12/5,000 emails. We did not recheck those paid bands on 21 October. The 500-reader workload remains 500 × 4 + 50 × 3 = 2,150 sends, with those 50 newcomers already included in the list.

Count recipients before planning the move

Sender distinguishes active subscribers from unique recipients emailed during the billing period, and both counters matter. Deleting someone after emailing them does not erase the month's recipient count. MailerLite describes unique active email addresses across groups, with unsubscribed and bounced contacts excluded. Match the same permission-eligible audience before calling one quote cheaper.

Keep unsubscribes, consent evidence and group mappings when moving. Recreate one welcome sequence with permitted test records, including an unsubscribe, before changing forms. This is a suggested buyer check, not a test BenPicks has completed. The migration checklist covers the handoff; MailerLite alternatives helps when newsletters are no longer the main job.

Download the editable calculations. The practical choice is Sender while its free limits meet the complete brief, or a paid comparison once your actual send pattern outgrows them. Reconfirm the selected quote and required features before paying.

Sources: Sender pricing ↗ — selected 2,500 subscribers, USD, monthly billing on 21 October 2026; subscriber counting ↗ — retained 17 October observation, publicly retrieved again on 21 October. MailerLite pricing ↗ and free-plan FAQ ↗ pricing rechecked 21 October for 2,500 subscribers, monthly USD; the free-plan FAQ observation remains dated 18 October 2026. BenPicks has an existing MailerLite affiliate link; Sender approval is unconfirmed. That does not determine the recommendation.