Compare: Rebump for Gmail vs Mail Merge for Gmail - Mailmeteor

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Metric	Rebump for Gmail	Mail Merge for Gmail - Mailmeteor
User count	6,000	50,000
Average rating	4.91	4.75
Rating count	267	166
Last updated	2026-07-09	2026-06-23
Size	1.04 MB	3.80 MB
Version	4.0.22	2.19.1

Short description	Automate follow-ups in Gmail and Google Workspace with Rebump. Unlimited messages, customizable bump intervals, tracking, and seamless CRM integration.	Boost Gmail with Mailmeteor's AI assistant that auto-organizes your inbox, drafts replies, tracks opens, and enables mail merge—right inside Gmail.
Full summary	Rebump for Gmail automates your follow-up emails within Gmail and Google Workspace. It sends multiple follow-up messages that appear as if you authored them, supports unlimited messages and customizable bump intervals, and provides tracking for opens and link clicks along with a dashboard to monitor activity. Key features include customizable bump messages, scheduling by day and time, attachments, Gmail signatures, an alternate email address option, up to 10 bumps per message, API access, and seamless CRM integration. Rebump is a popular productivity extension for reliable follow-ups at a low price.	Mailmeteor Assistant brings AI-powered email productivity to Gmail. It auto-organizes your inbox, drafts replies in your tone, writes alongside you, and enables mail merge—without leaving Gmail. Most features are free, with upgrades for more AI credits and advanced tools like email tracking, auto follow-ups, and CRM integrations. Trusted by millions and built with privacy in mind.