How do I add multiple addresses to a Contact List?

Hello Dunn,

Thank you for reaching out!

Currently, Outlook on the web does not provide a direct option to bulk-add multiple email addresses to a new contact list in one step (other than the CSV import, which you’ve already tried). However, you can try apply this to add multiple email addresses for Web version:

• Open Outlook Web and go to People > New Contact List.
• In the Add email addresses field, click once so it’s active (please make sure don't forget this step)
• Press F12 (or right-click → Inspect) to open Developer Tools.
• Go to the Console tab.
• Paste this snippet (sometimes, you need to write allow pasting first in Console):

(() => {
	const ADDRESSES_TEXT = ` user1@example.com, user2@example.com, user3@example.com, user4@example.com `.trim();
	const SEPARATOR_TO_FORCE_COMMIT = '; ';
	const SUGGESTION_APPEAR_TIMEOUT = 3000
	const AFTER_CLICK_SETTLE_DELAY  = 200;
	const BETWEEN_ITEMS_DELAY       = 220;
	const ADD_ENABLE_TIMEOUT        = 2500;
	const ADD_LABELS = [     'add','thêm','ajouter','añadir','hinzufügen','aggiungi','adicionar','добавить','添加','追加','추가'   ];
	const sleep = ms => new Promise(r => setTimeout(r, ms));
	const visible = el => !!(el && el.offsetParent !== null && getComputedStyle(el).visibility !== 'hidden');
	const active = document.activeElement;
	let input = (active && (active.tagName === 'INPUT' || active.tagName === 'TEXTAREA'))     ? active     : (active && active.querySelector && active.querySelector('input,textarea'));
	if (!input) { alert('Click into the "Add email addresses" field once, then run again.'); return; }
	const setReactValue = (el, value) => {
		const proto = Object.getPrototypeOf(el);
		const setter =       
			Object.getOwnPropertyDescriptor(proto, 'value')?.set || Object.getOwnPropertyDescriptor(HTMLInputElement.prototype, 'value')?.set;     
		setter.call(el, value);     
		el.dispatchEvent(new Event('input', { bubbles: true }));   };   
	const clickLikeAUser = (el) => {     
		el.dispatchEvent(new PointerEvent('pointerdown', { bubbles: true }));     
		el.dispatchEvent(new MouseEvent('mousedown',     { bubbles: true }));     
		el.dispatchEvent(new PointerEvent('pointerup',   { bubbles: true }));     
		el.dispatchEvent(new MouseEvent('mouseup',       { bubbles: true }));     
		el.dispatchEvent(new MouseEvent('click',         { bubbles: true }));   };
	const findSuggestions = () => {    
		let root = input.closest('[role="dialog"], [data-is-focusable], .ms-Layer, .ms-Callout') || document;     
		let list = root.querySelector('[role="listbox"]');     
		if (!list) list = document.querySelector('[role="listbox"]');     
		return list && visible(list) ? list : null;   };   
	const getSuggestionOptions = () => {     
		const list = findSuggestions();     
		if (!list) return [];
		const opts = Array.from(list.querySelectorAll('[role="option"], .ms-Suggestions-itemButton, button[role="option"]')).filter(visible);     
		return opts;   };
		const findAddButton = () => {     
			const scope = input.closest('div[role="dialog"], [data-automationid], .ms-Panel, .root-') || document;     
			const cands = Array.from(scope.querySelectorAll('button, [role="button"]')).filter(visible);     
			for (const b of cands) {       
				const label = (b.getAttribute('aria-label') || b.getAttribute('title') || b.textContent || '').trim().toLowerCase();       
				const looksAdd = ADD_LABELS.some(k => label.includes(k));       
				if (looksAdd) return b;     }          
			return cands.find(b => /\bms-Button--primary\b/.test(b.className) && !b.disabled) || null;   };   
		const waitForAddEnabled = async (btn, timeoutMs) => {     
		const start = Date.now();     
		while (Date.now() - start < timeoutMs) {       
			if (btn && !btn.disabled && btn.getAttribute('aria-disabled') !== 'true' && visible(btn)) return true;       
			await sleep(120);     }     
		return false;   };   
	const addresses = ADDRESSES_TEXT.split(/[,\n;]+/).map(s => s.trim()).filter(Boolean);   
	(async () => {     
		input.focus();     
		for (const addr of addresses) {       
			setReactValue(input, addr);       
			await sleep(140);       
			let clickedSuggestion = false;       
			const t0 = Date.now();       
			while (Date.now() - t0 < SUGGESTION_APPEAR_TIMEOUT && !clickedSuggestion) {         	const options = getSuggestionOptions();         
			if (options.length) {           
				const lower = addr.toLowerCase();           
				const match = options.find(o => (o.innerText || o.textContent || '').toLowerCase().includes(lower)) || options[0];           
				clickLikeAUser(match);           
				clickedSuggestion = true;           
				break;         
			}         
			await sleep(120);       
		}       
		let committed = false;       
		const addBtn = findAddButton();       
		if (addBtn) {         
			const ok = await waitForAddEnabled(addBtn, ADD_ENABLE_TIMEOUT);         
			if (ok) {           
				clickLikeAUser(addBtn);           
				committed = true;           
				await sleep(AFTER_CLICK_SETTLE_DELAY);         
			}       
		}              
		if (!committed && !clickedSuggestion) {         
			setReactValue(input, addr + SEPARATOR_TO_FORCE_COMMIT);         
			await sleep(140);         
			input.blur();         
			await sleep(160);         
			input.focus();       
		}       
		await sleep(BETWEEN_ITEMS_DELAY);     
	}     
	input.blur();     
	console.log(`✅ Processed ${addresses.length} address(es) via suggestion click + Add button (with fallback).`);   
})(); })();

Note: Please change userX@example.com to your real email addresses. You can use AI or any tools to create format 'user1@example.com, user2@example.com, ...'. Then replace it in this part of above code:

ADDRESSES_TEXT = ` user1@example.com, user2@example.com, user3@example.com, user4@example.com `.trim();

If the issue persists, please let me know. I’ll be happy to guide you further.

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Best regards,

Sin Dau