Sendaloft Research

The deliverability research library

Sourced statistics and analysis on inbox placement, authentication, cold email, spam, and everything that decides whether your email lands in Primary.

Deliverability

24 Email Deliverability Statistics That Matter in 2026

Inbox placement, authentication, bounce and hygiene benchmarks, sender reputation, and the ROI on the line.

Read →
Deliverability

22 Inbox Placement Statistics That Matter in 2026

Where email actually lands - by mailbox provider, region, industry, and ESP - and how placement is trending.

Read →
Deliverability

22 Email Spam Statistics That Matter in 2026

How much of email is spam, where legitimate mail is filtered, complaint thresholds, and the cost of phishing.

Read →
Deliverability

21 Email Authentication Statistics That Matter in 2026

SPF, DKIM, and DMARC adoption and enforcement - and the placement gap authentication opens up.

Read →
Deliverability

21 Gmail & Yahoo Sender Requirement Statistics

The February 2024 bulk-sender rules, who complied, and what enforcement did to authentication and spam.

Read →
Deliverability

21 Sender Reputation Statistics That Matter in 2026

Sender Score, IP vs domain reputation, blocklists, complaint thresholds, and the monitoring gaps that sink senders.

Read →
Deliverability

18 Email Bounce Rate Statistics That Matter in 2026

Bounce benchmarks by industry, hard vs soft, acceptable thresholds, and how verification cuts bounces.

Read →
Deliverability

21 Email List Hygiene Statistics That Matter in 2026

List decay, spam traps, verification impact, re-engagement, and the real cost of a dirty list.

Read →
Deliverability

23 Cold Email Statistics That Matter in 2026

Open and reply benchmarks, deliverability, personalization lift, follow-up returns, and the best times to send.

Read →
Deliverability

20 B2B Sales Email Statistics That Matter in 2026

Reply and meeting rates, subject lines, sequences, personalization, SDR volume, and send timing.

Read →
Deliverability

20 Email Open Rate Statistics That Matter in 2026

Open benchmarks by industry, Apple MPP inflation, mobile vs desktop, subject lines, and B2B vs B2C.

Read →
Deliverability

19 Email Engagement Statistics That Matter in 2026

Click-through, click-to-open, unsubscribe and complaint benchmarks, and how engagement drives deliverability.

Read →
Deliverability

22 Apple Mail Privacy & Bot-Open Statistics

MPP adoption, open-rate inflation, bot and scanner opens, and the shift to click and engagement metrics.

Read →
Deliverability

24 Email Marketing ROI Statistics That Matter in 2026

ROI by industry, segmentation and automation revenue, channel comparison, and the ROI lost to poor placement.

Read →
Deliverability

21 Email & Spam Volume Statistics That Matter in 2026

Daily email volume and growth, global users, spam share and origin, mobile opens, and account counts.

Read →
Deliverability

20 Email Marketing Statistics That Matter in 2026

Market size, ROI, open and click benchmarks, automation revenue, personalization, and mobile trends.

Read →
Deliverability

21 Email Automation Statistics That Matter in 2026

Automation adoption, triggered-email revenue share, flow performance, and automated-vs-campaign ROI.

Read →
Deliverability

24 Abandoned Cart Email Statistics That Matter in 2026

Cart abandonment rates, recovery conversion, revenue per email, send timing, and discount impact.

Read →
Deliverability

19 Welcome Email Statistics That Matter in 2026

Welcome open and click rates, revenue per email, series vs single, timing, and subscriber expectations.

Read →
Deliverability

21 Email Subject Line Statistics That Matter in 2026

Length, personalization, emoji, questions and urgency, capitalization, and preheader text.

Read →
Deliverability

21 Email Personalization Statistics That Matter in 2026

Open and click lift, revenue impact, dynamic content, consumer expectations, and AI adoption.

Read →
Deliverability

18 Email Segmentation Statistics That Matter in 2026

Segmented vs non-segmented opens and clicks, revenue share, and behavioral targeting.

Read →
Deliverability

24 Newsletter Statistics That Matter in 2026

Open and click benchmarks, subscriber growth, cadence, and newsletter monetization.

Read →
Deliverability

18 Transactional Email Statistics That Matter in 2026

Transactional open rates, engagement, volume, cross-sell revenue, and inbox reliability.

Read →
Deliverability

18 Email Frequency Statistics That Matter in 2026

Optimal send cadence, unsubscribe triggers, consumer preferences, fatigue, and revenue impact.

Read →
Deliverability

18 Mobile Email Statistics That Matter in 2026

Mobile's share of opens and clicks, Apple and Gmail dominance, and responsive-design payoff.

Read →
Deliverability

22 Ecommerce Email Marketing Statistics That Matter in 2026

Email's share of ecommerce revenue, automation flows, ROI, AOV, and BFCM performance.

Read →
Deliverability

22 Email Security Statistics That Matter in 2026

Phishing and BEC losses, breaches that start with email, DMARC, and the cost of email attacks.

Read →
Deliverability

14 Email A/B Testing Statistics That Matter in 2026

Who tests, the ROI of testing, and documented open, click, and conversion lifts.

Read →
Deliverability

21 Email Warm-up Statistics That Matter in 2026

Warm-up duration, volume ramps, new vs aged domains, deliverability lift, and per-mailbox limits.

Read →